L Robert Warren, MD
NPI 1558341933ActiveIndividual· Family Medicine· Belvidere, IL
Family Medicine (MD) in Belvidere, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $239,875 for 1,456 claims, against $25,240 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 6 companies reporting payments in 2025, $390.43 in all, mostly food and beverage.
Overview
| NPI | 1558341933 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 20, 2006 |
| Last updated in NPPES | Jul 18, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 036061249 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 288 across 14 procedure codes |
| Paid by Medicare | $25,240 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,456 · 3,783 30-day fills |
|---|---|
| Patients | 96 |
| Total drug cost | $239,875 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Family Practice |
Hospital affiliations
- Saint Anthony Medical CenterRockford, IL
- Uw HealthRockford, IL
Other facilities
- Osf Healthcare Home CareHome health agency · Loves Park, IL
Industry payments (Open Payments)
- 2025$390.43 · 20 payments from 6 companies
- 2024$1,301 · 35 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $141.18 | 8 |
| Bayer Healthcare Pharmaceuticals Inc. | $99.49 | 5 |
| Lilly USA, LLC | $78.48 | 4 |
| Abbvie Inc. | $25.23 | 1 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $23.89 | 1 |
What the 2025 payments were for
- Food and Beverage$390.43 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 31 family medicine physicians in Belvidere · All family medicine physicians in Illinois